<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        div{
            width: 50px;
            height: 50px;
            border: 1px solid blue;
            border-radius: 50px 0px 0px 0px ;
        }
        img{
            border-radius: 320px ;
        }
    </style>
</head>
<body>
<div>   </div>
<img src="images/img.png" alt="">
</body>
</html>